This morning my chickens were attacked by a fox. I was in my office room, which overlooks the coop and where the chickens walk around during the day, when all of a sudden I hear them going crazy only to find that when I looked out the window I saw a fox leaping mid-air after my chickens. I ran outside as quickly as I could, and was able to find 5 out of 6 chickens (they were scattered). I was not able to find the 6th chicken, who also happens to be the alpha chicken. As I was searching for her I came across the fox again (40 feet away) who was seemingly lying in wait for me to go back inside. I chased him off, but I was not able to find any evidence of a dead chicken where he was. My question is, is my chicken possibly alive and just hiding somewhere? Or should I just lose hope?